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/* $OpenBSD: store.c,v 1.25 2009/08/08 00:02:22 gilles Exp $ */
/*
* Copyright (c) 2008 Gilles Chehade <gilles@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <event.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "smtpd.h"
int
file_copy(FILE *dest, FILE *src, struct path *path, enum action_type type, int session)
{
char *buf, *lbuf;
size_t len;
char *escape;
int inheaders = 1;
lbuf = NULL;
while ((buf = fgetln(src, &len))) {
if (buf[len - 1] == '\n') {
buf[len - 1] = '\0';
len--;
}
else {
/* EOF without EOL, copy and add the NUL */
if ((lbuf = malloc(len + 1)) == NULL)
err(1, NULL);
memcpy(lbuf, buf, len);
lbuf[len] = '\0';
buf = lbuf;
}
/* If we are NOT dealing with a mailer daemon copy, we have
* path set to the original recipient. In that case, we can
* add the Delivered-To header to help loop detection.
*/
if (!session && path != NULL && inheaders &&
strchr(buf, ':') == NULL && !isspace((int)*buf)) {
if (fprintf(dest, "Delivered-To: %s@%s\n",
path->user, path->domain) == -1)
return 0;
inheaders = 0;
}
if (!session && type == A_MBOX) {
escape = buf;
while (*escape == '>')
++escape;
if (strncmp("From ", escape, 5) == 0) {
if (fprintf(dest, ">") != 1)
return 0;
}
}
/* "If first character of the line is a period, one
* additional period is inserted at the beginning."
* [4.5.2]
*/
if (session && *buf == '.')
if (fprintf(dest, ".") != 1)
return 0;
if (fprintf(dest, "%s%s", buf, session ? "\r\n" : "\n") !=
(int)len + (session ? 2 : 1))
return 0;
}
free(lbuf);
if (!session && type == A_MBOX) {
if (fprintf(dest, "\n") != 1)
return 0;
}
return 1;
}
int
store_write_message(struct batch *batchp, struct message *messagep)
{
FILE *mboxfp;
FILE *messagefp;
mboxfp = fdopen(batchp->sessionp->mboxfd, "a");
if (mboxfp == NULL)
return 0;
messagefp = fdopen(batchp->sessionp->messagefd, "r");
if (messagefp == NULL)
goto bad;
if (! file_copy(mboxfp, messagefp, &messagep->session_rcpt,
messagep->recipient.rule.r_action, 0))
goto bad;
fflush(mboxfp);
fsync(fileno(mboxfp));
fclose(mboxfp);
fclose(messagefp);
return 1;
bad:
if (mboxfp != NULL)
fclose(mboxfp);
if (messagefp != NULL)
fclose(messagefp);
return 0;
}
int
store_message(struct batch *batchp, struct message *messagep)
{
struct stat sb;
if (fstat(batchp->sessionp->mboxfd, &sb) == -1)
return 0;
if (! store_write_message(batchp, messagep)) {
if (S_ISREG(sb.st_mode)) {
ftruncate(batchp->sessionp->mboxfd, sb.st_size);
return 0;
}
return 0;
}
return 1;
}
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